The sharing happens through the Facebook Software Development Kit (SDK), a set of software development tools that can be used to develop apps for a specific operating system.
Menstruation apps collect information about a woman’s health, sex life, mood and more – all in exchange for telling you what day of the month you’re most fertile or the date of your next period.
Privacy International looked at apps including Period Tracker by Leap Fitness Group; Period Tracker Flo by Flo Health, Inc.; Period Tracker by Simple Design Ltd.; and Clue Period Tracker by Biowink who was called out on the practice last year. None of them shared data with Facebook.
However, Maya by Plackal Tech, MIA by Mobapp Development Limited, My Period Tracker by Linchpin Health did change its mind After Privacy international shared this report:
Linchpin Health did not respond, and MIA did not wish to have their response published.
Privacy International points out that there are good reasons why advertisers want to know your mood. At a banal level, they will pitch certain food types at women at certain points in their cycle or hit you with PMT remedies at another.